Metric socket sets come with drive tools and an assortment of sockets for a range of fastener sizes. - They come in sizes that are measured in millimeters to fit fasteners with a metric size head. Standard Socket Count/Style / (22) - 12-Point Standard Socket Style/ Standard 12-Point Socket Size Range / 21 mm to 60 mm Drive Size / 3/4 in Drive Type / Hand Finish / Satin Measurement Type / Metric Standards / AS4283, ASME B107.1, ASME B107.500 Drive Tools Included / 20 in Pear Head Ratchet Includes / 3/8 in F x 1/2 in M AdaPointer, Number of Pieces / 28 Socket Shape / 12-Point Socket Size / 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, 32 mm, 35 mm, 36 mm, 38 mm, 41 mm, 42 mm, 46 mm, 50 mm, 54 mm, 55 mm, 58 mm, 60 mm